[LinuxBIOS] Ethernet problem with GeodeLX (db800) with running lxbios

Peter Stuge peter at stuge.se
Thu Sep 20 16:17:13 CEST 2007

On Thu, Sep 20, 2007 at 02:53:00PM +0200, Steffen D. wrote:
> I have unloaded the usb stuff. I have cated the interrupts before
> and after iperf...:
> ----------------------------------
> # cat /proc/interrupts
>  11:       4330    XT-PIC-XT        eth0
> # iperf -s
> ------------------------------------------------------------
> Server listening on TCP port 5001
> TCP window size: 85.3 KByte (default)
> ------------------------------------------------------------
> [  6] local port 5001 connected with port 32948
> [  6]  0.0-11.6 sec  1.66 MBytes  1.20 Mbits/sec
> meshnode:~# cat /proc/interrupts
>  11:       6418    XT-PIC-XT        eth0

So you are indeed getting interrupts. That's good.

I am not familiar with iperf and I don't know what you want.
I suppose you want to see 100Mbps instead of 1.20Mbps.

I don't know what is realistic to expect from the hardware you are
using. Also it would be more accurate to test throughput (if that is
what you are doing) using UDP because it is fire and forget as
opposed to TCP which needs handshaking.

What's the problem again? Your previous logs indicate that the link
goes up and down, but that's not a lot of information..

Is this NIC also behind that PCI bridge?


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